Telegraph-converter.



I. KITSEE. TELEGRAPH CONVERTER APPLIOATZON PILEID D304, 1908. RENEWEDJUNE 8,1911.

Patented Jan. 28, 1913.

2 SHEETS-SHEET 1.

I. KITSEE.

TELEGRAPH CONVERTER. IPPLIOATIOH FILED D20. 4, 190a. RENEWED mm: a,1911.

1,051,599, Patented Jan. 28, 1913.

2 SHEETS-SHEET 2.

WITNESSES Z MW if; ATTORNEY UNITED STATES PATENT OFFICE.

ISIDOR KITSEE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO\VILLIAIl-I J. LATTA, OF PHILADELPHIA PENNSYLVANIA.

TELEGRAPH-CONVERTER.

Specification of Letters Patent.

Patented Jan. 28, 1913.

Application filed December 4, 1908, Serial No. 466.015. Renewed June 8,1911. Serial No. 632,923.

To l who/n Hf may concern lc it known that l. lsmou l\'i'rsin i. acitizen of the United States. residing in the city of Philadelphia.county of Philadclphia, and State of ltmnsylwinia. have invented a newand useful 'lelcgraph-(om vertcr. of which the following is aspecification.

My invention relates to electric. tclegraphy and more particularly totelegrz'iphy over long lines or circuits. such as long land lines.sul'nnarine, sul'itcrrancan. o aerial cables. or. in fact. any circuitor comluctor. especially when having great comic-user or capacityefiect.

My invention resides in a telegraphic conver r or tran forme having thefeatures hereinafter describmi and claimed. in combination with ircuitarrangements. such. for example. may be, employed in duplextclegraphyover lines having great condenser or capacity eliecti.

For an illustration of one ot the forms my invention may taltc.reference is to be had to the acmmpanving drawixw. in which:

Figure l a diagrammatic view showing cable sending and receivingapparatus involving a telegraphic converter or transformer. Fig. 2 is aplan view of the converter or transformer. Fig. 3 is an end elevation oftlw same. Fig. t is a side elevation of thc sanic. Fig. 5 is a cross300' tional view. some parts in elevation. taken on the line of Fig;

Referring to Fig. i. (l ro ircsents a subn'iarinc cable. or other lineor cable having great condenser or capacity eti'ect. ictween it and theearth I) are serially connected the primary P of the tltll'ls'ltil'llltl' or convcrtcr. the batteries or sources of energy I; and 7)and the adjustable resistance From a point between the sources I) and Itthere is a connectionin one terminal of a second converter ortransformer winding p which may be considered a-s'econd primary .iuding.The number of turns in prima is adjustable and from th otherterminal-there is a ttllllicitlfill through the lt'l ll Sltlllltresistance through the operator key Z". when closed. to earth E. S is ai wudary whirling of the converter or ranst'ormer and in series with itare conia "ted the condenser (T and the winding of a mlarized relay R.or other relay or signal this connected in series with each other at thol i l translating instrument, whose armature 0r tongue t and contact acontrol the circuit including the sounder or oth r recorder or othertranslating instrument. M and the source of energy or battery mi. Asexplained in a co-pending application filed by me, this arrangement ofcircuits is for duplex cable telegraphy. The operator manipulates hiskey IL' and in so doing causes inmulscs of alternate polarity to beimpressed upon the line or cable (I. But the effect. upon the circuit ofthe secondary S of any impulses transmitted to the line or cable isrendered zero or negligible by the second primary p which is ininductive relation with the secondary S and so disposed and connected asto cause no effect upon the receiving instrument of impulses transmittedfrom the same station. Impulscs received over the cable from a d tautstation pass through the primary P and by inductive etl'cct upon thesecondary actuate or control a relay or other instrument. R to translatea signal or message.

The converter or transformer here shown is of the closed magneticcircuit type, the magnetic circuit comprising the central limb or corc 1(see Fig. 2, etc.) with the side limbs 2 and 3. and the end limbs 4 andThe core 1 may be composed of a bundle of iron vires While the limbs maybe. composed of laminae of iron. the core and limbs being securedtogether by a bolt 6. drawing the end limbs 4 and 5 against. the wiresof the core 1. or the core 1 may extend through some or all of thclaminar of the end limbs 4 and Upon the core or central limb 1 isdisposed the. winding or primary ("oil I which connected in circuit withthe lino or cable as prcviouslv described. this winding l being suitablyinsulated from the core I. The terminals of the winding P are at thebinding posts 7 and S.

l pon the limb is a Wrapping or sleeve of insulating material 9 uponwhich is disposed the secondary winding S. here. shouu as consisting ofa plurality of coils ll.) all binding posts 11 ca rricd upon theinsulating strip 12 supported by the members 13, which surround andsupport the core or limb l and are se ured to the base H. the bobbin ofthe winding l being alsose ured lo the strip 12. The converter PS ishere shown Thus, the number of ti .7) may be adjusted wit as a step-downtransformer, that is,'the sec ondary S has fewer turns than the primaryP.

Upon the limb 3 is a. covering or sleeve of insulating material 15 uponwhich is wound the second primary coil 3) having one terminal at thebinding post 16 and its other terminal the movable contact or rider 17,secured by the screw or fastener 18, forming an adjustable handle is themet-ah lic block I9 having two apertnr i: thrcugh which pass thestationary metallic rods and 21, which aflord means for supporting themovable contact 17 and maintaining electrical communication therewithand with the binding post 22, which, i in else communication with thered 23-is a clamping screw for clamping the movable-contact in anyposition to which it may be adjusted. The insulation bufi'ed or roundoff on. the top side of the coil p, so t at the contact 17 i engage thebared wire, and thus 13' adjusting the. Contact, l? to any position acng the bars and 21 the number of turns in the primary 3) may beadjusted. While the windings P and S may be disposed on the same cc rlimb, l prefer that each be on a seperau From the foregoing descriptionit is ap parent that I have provided a closed mag netic circuitconverter havin ir e inductively related windings. e separate core erlizr duplex system whehibits great capaci number of turns in ii; also beadjusted by if 1: binding posts 11.

What I claim is:

l. The combination r "'h. the line or cable having great capacity, cftrans ing a closed magnetic circu", ing three windings, e 1 each upon asepara said windings courier l in and another of said wind n neutralizeeffects in the 2. The combination x i. v. having great capacity atransformer inga closed magnetic cir 1L comp a primary and secondary iied A a separate core or limb of netic circuit said primary ed with saidline or c ondary winding ccntrcli ratus.

3. The combination with it; having great capacity, GTE a ing a closedmagnetic irc three windings each up or core, a primary windir 1 cuitwith the line or cable, slary wind-- ing in circuit withrcceivingapparatus, and

i a: can acting; ts

i each cg ccnne' d secng apps iine or cable fcrmer haw and having aseparate ill iikli": (I; e

" eluded in cireagues a primary winding in a circuit controlled bytransmitting means.

upon a different limb or core of a closed magnetic circuit, a primarywinding of said transformer included in circuit with transmitting means,and means for adjusting the number of turns in said primary winding, andanother of said windings connected in line or cable.

5. The combination with the line or cable having greatcapacity, of astep-down transformer having the primary connected with said line orcable, a secondary winding included in a receiving circuit, and anadjustable primary windlng included in circuit with transmittin means,said transformer windings being disposed each upon a different limb orcore of a closed magnetic circuit.

6. The combination with a line. or cable having great capacity, of atransformer having a closed magnetic circuit, a primary windingof saidtransformer connected in said line or cable, a secondary winding oftransformer included in a receiving circult and disposed upon a limb ofsaid magnetic circuit, a second windin upon another limb of saidcircuit, a slide support, ands movable contact mounted upon said turnsin winding. 7, The combination with a line or cable having greatcapacity, of a transformer having a closed magnetic circuit, saidmagnetic circuit having a plurality of limbs, a primary winding includedin circuit with said line or cable, a secondary winding included circuitwith receiving apparatus, and a third winding associated withtransmitting apparatus, a slide support associated with said thirdwinding, and a movable contact carried by said slide support foradjusting the number of turns in said third winding.

The combination with a line or cable having great capacity,-of atransformer as scciated herewith and having aclosed magnit, members forsupporting said in netic circuit, a winding upon each cf thre u'entlimbs of said magnetic cirsaid windings connected with "able, a secondwinding connectwith receiving apparatus, a d winding associated withtransmitting apparai us, a slide support supported by said supportingmembers, and a contact movable the number of turns in said thirdwinding.

9, in duplex telegraphy, the combination with the line, of receivingapparatus com-. prising a transformer having a closed magnetic circuitand whose primary is associwith said line, a receiving instrumentccntrolled by the transformer secondary,

comprising three windings disposed eachupcn said slide support andadapted to vary slide support for adjusting the number of i and a thirdWinding upon said transformer associated with the transmitting apparatusfor neutralizing in the transformer secondary the effect of thetransmitted impulses, said closed magnetic circuit having three limbs,one of said windings disposed upon each limb.

10. In duplex telegraphy, the combination With the line, of receivingapparatus comprising a transformer having a closed magnetic circuit andWhose primary is associated With said line, a receiving instrumentcontrolled by the transformer secondary, a third Winding upon saidtransformer associated with the transmitting apparatus for neutralizingin the transformer secondary the effect of the transmitted impulses,said closed magnetic circuit having three limbs, one of said windingsdisposed upon each limb, and means for adjusting the number of turns insaid third Winding.

In testimony whereof I have hereunto affixed my signature in thepresence of the two subscribing Witnesses.

ISIDOR KITSEE.

Witnesses:

A. E. STEINBOCK, ELEANOR T. MCCALL.

